Seal for a rotary shaft



FIG. 1 is a perspective view of a seal for a rotary shaft showing our design;

FIG. 2 is a side plane view thereof, the view from all sides being identical;

FIG. 3 is a rear elevational view thereof; and,

FIG. 4 is a front elevational view thereof. 

The ornamental design for a seal for a rotary shaft, as shown and described. 